gc physics textbook chapter 4 problems (id: 3f78e63ba)

本题目来源于试卷: gc physics textbook chapter 4 problems，类别为 通用国际物理

[填空题]
According to a simplified model of;)aw:5m- k nj9 eh+nz+wqplfj q/xrm. a mammalian heart,1pih..t vk l,h at each pulse approximately 21k i,.tpvh.h l0 g of blood is accelerated from 0.25 $\mathrm{~m} / \mathrm{s}$ to 0.35 $\mathrm{~m} / \mathrm{s}$ during a period of 0.10 s . What is the magnitude of the force exerted by the heart muscle?   

参考答案: 1.3±2%


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